Home / 28,214.28-38,938.50-15,641.46

Finding the Fourth Proportional to 28,214.28, 38,938.50 and 15,641.46

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Solution

The fourth proportional to 28,214.28, 38,938.50 and 15,641.46 is: 21,586.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,214.28 : 38,938.50 = 15,641.46 : x
  2. Step 2: Convert to fraction form
    28,214.28/38,938.50 = 15,641.46/x
  3. Step 3: Cross multiply
    28,214.28x = 38,938.50 × 15,641.46
  4. Step 4: Simplify right side
    28,214.28x = 609,054,990.21
  5. Step 5: Solve for x
    x = 609,054,990.21/28,214.28
  6. Step 6: Final answer
    x = 21,586.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.